diff --git a/libraries/networking/networking-client-mcb1.0-mcb1.4_01/build.gradle b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/build.gradle
new file mode 100644
index 00000000..1b28a68b
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/build.gradle
@@ -0,0 +1,4 @@
+setUpModule(project,
+	'entrypoints-client-mca1.0.6-mc12w30e',
+	'lifecycle-events-client-mcb1.3-1750-mcb1.7.3'
+)
diff --git a/libraries/networking/networking-client-mcb1.0-mcb1.4_01/gradle.properties b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/gradle.properties
new file mode 100644
index 00000000..46bbb243
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/gradle.properties
@@ -0,0 +1,7 @@
+environment = client
+min_mc_version = b1.0
+max_mc_version = b1.4_01
+mc_version_range = >=1.0.0-beta.0 <=1.0.0-beta.4.1
+
+feather_build = 12
+nests_build = 1
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java
diff --git a/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
new file mode 100644
index 00000000..a23c4df4
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
@@ -0,0 +1,73 @@
+package net.ornithemc.osl.networking.impl;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+import net.minecraft.client.network.handler.ClientNetworkHandler;
+import net.minecraft.network.PacketHandler;
+import net.minecraft.network.packet.Packet;
+
+import net.ornithemc.osl.networking.impl.client.ClientPlayNetworkingImpl;
+
+public class CustomPayloadPacket extends Packet {
+
+	public String channel;
+	public int size;
+	public byte[] data;
+
+	public CustomPayloadPacket() {
+	}
+
+	public CustomPayloadPacket(String channel, byte[] data) {
+		this.channel = channel;
+		this.data = data;
+		if (data != null) {
+			this.size = data.length;
+			if (this.size > Short.MAX_VALUE) {
+				throw new IllegalArgumentException("Payload may not be larger than 32k");
+			}
+		}
+	}
+
+	// the IOException has been stripped from the read/write methods
+	// by the obfuscator, thus we catch it and re-throw it as a
+	// runtime exception - it will be caught in Connection#read anyhow
+
+	@Override
+	public void read(DataInputStream input) {
+		try {
+			this.channel = input.readUTF();
+			this.size = input.readShort();
+			if (this.size > 0 && this.size < Short.MAX_VALUE) {
+				this.data = new byte[this.size];
+				input.readFully(this.data);
+			}
+		} catch (IOException e) {
+			throw new IllegalStateException(e);
+		}
+	}
+
+	@Override
+	public void write(DataOutputStream output) {
+		try {
+			output.writeUTF(this.channel);
+			output.writeShort(this.size);
+			if (this.data != null) {
+				output.write(this.data);
+			}
+		} catch (IOException e) {
+			throw new IllegalStateException(e);
+		}
+	}
+
+	@Override
+	public void handle(PacketHandler handler) {
+		ClientPlayNetworkingImpl.handle((ClientNetworkHandler)handler, this);
+	}
+
+	@Override
+	public int getSize() {
+		return 2 + this.channel.length() * 2 + 2 + this.size;
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
new file mode 100644
index 00000000..3288d684
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
@@ -0,0 +1,53 @@
+package net.ornithemc.osl.networking.impl;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import net.ornithemc.osl.networking.api.CustomPayload;
+import net.ornithemc.osl.networking.impl.client.ClientPlayNetworkingImpl;
+
+public class HandshakePayload implements CustomPayload {
+
+	public static final String CHANNEL = "OSL|Handshake";
+
+	public Set<String> channels;
+
+	public HandshakePayload() {
+	}
+
+	public HandshakePayload(Set<String> channels) {
+		this.channels = channels;
+	}
+
+	public static HandshakePayload client() {
+		return new HandshakePayload(ClientPlayNetworkingImpl.LISTENERS.keySet());
+	}
+
+	public static HandshakePayload server() {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public void read(DataInputStream input) throws IOException {
+		channels = new LinkedHashSet<>();
+		int channelCount = input.readInt();
+
+		if (channelCount > 0) {
+			for (int i = 0; i < channelCount; i++) {
+				channels.add(input.readUTF());
+			}
+		}
+	}
+
+	@Override
+	public void write(DataOutputStream output) throws IOException {
+		output.writeInt(channels.size());
+
+		for (String channel : channels) {
+			output.writeUTF(channel);
+		}
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/Networking.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
new file mode 100644
index 00000000..6dbdb0bd
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
@@ -0,0 +1,37 @@
+package net.ornithemc.osl.networking.impl;
+
+import net.ornithemc.osl.entrypoints.api.ModInitializer;
+import net.ornithemc.osl.entrypoints.api.client.ClientModInitializer;
+import net.ornithemc.osl.lifecycle.api.MinecraftEvents;
+import net.ornithemc.osl.networking.api.client.ClientConnectionEvents;
+import net.ornithemc.osl.networking.api.client.ClientPlayNetworking;
+import net.ornithemc.osl.networking.impl.client.ClientPlayNetworkingImpl;
+import net.ornithemc.osl.networking.impl.interfaces.mixin.IClientNetworkHandler;
+import net.ornithemc.osl.networking.impl.mixin.common.PacketAccessor;
+
+public class Networking implements ModInitializer, ClientModInitializer {
+
+	@Override
+	public void init() {
+		PacketAccessor.register(Constants.CUSTOM_PAYLOAD_PACKET_ID, CustomPayloadPacket.class);
+	}
+
+	@Override
+	public void initClient() {
+		MinecraftEvents.START.register(minecraft -> {
+			ClientPlayNetworkingImpl.setUp(minecraft);
+		});
+		MinecraftEvents.STOP.register(minecraft -> {
+			ClientPlayNetworkingImpl.destroy(minecraft);
+		});
+		ClientPlayNetworking.registerListener(HandshakePayload.CHANNEL, HandshakePayload::new, (minecraft, handler, payload) -> {
+			// send channel registration data as a response to receiving server channel registration data
+			ClientPlayNetworking.doSend(HandshakePayload.CHANNEL, HandshakePayload.client());
+
+			((IClientNetworkHandler)handler).osl$networking$registerServerChannels(payload.channels);
+			ClientConnectionEvents.PLAY_READY.invoker().accept(minecraft);
+
+			return true;
+		});
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java
diff --git a/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
new file mode 100644
index 00000000..ccc94437
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
@@ -0,0 +1,15 @@
+package net.ornithemc.osl.networking.impl.mixin.common;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Invoker;
+
+import net.minecraft.network.packet.Packet;
+
+@Mixin(Packet.class)
+public interface PacketAccessor {
+
+	@Invoker("register")
+	public static void register(int id, Class<? extends Packet> type) {
+		throw new AssertionError();
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/resources/osl.networking.mixins.json b/libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/resources/osl.networking.mixins.json
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/resources/osl.networking.mixins.json
rename to libraries/networking/networking-client-mcb1.0-mcb1.4_01/src/main/resources/osl.networking.mixins.json
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/build.gradle b/libraries/networking/networking-client-mcb1.5-mc11w48a/build.gradle
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/build.gradle
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/build.gradle
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/gradle.properties b/libraries/networking/networking-client-mcb1.5-mc11w48a/gradle.properties
similarity index 51%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/gradle.properties
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/gradle.properties
index 272f12b9..e5b1e666 100644
--- a/libraries/networking/networking-client-mcb1.0-mc11w48a/gradle.properties
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/gradle.properties
@@ -1,7 +1,7 @@
 environment = client
-min_mc_version = b1.0
+min_mc_version = b1.5
 max_mc_version = 11w48a
-mc_version_range = >=1.0.0-beta.0 <=1.1-alpha.11.48.a
+mc_version_range = >=1.0.0-beta.5 <=1.1-alpha.11.48.a
 
 feather_build = 12
 nests_build = 1
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java
new file mode 100644
index 00000000..f0963ed6
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientConnectionEvents.java
@@ -0,0 +1,70 @@
+package net.ornithemc.osl.networking.api.client;
+
+import java.util.function.Consumer;
+
+import net.minecraft.client.Minecraft;
+
+import net.ornithemc.osl.core.api.events.Event;
+
+/**
+ * Events related to the client side of a client-server connection.
+ */
+public class ClientConnectionEvents {
+
+	/**
+	 * This event is fired after a successful login occurs.
+	 * 
+	 * <p>
+	 * Note that channel registration happens after login,
+	 * and until then data cannot safely be sent to the server.
+	 * 
+	 * <p>
+	 * Callbacks to this event should be registered in your mod's entrypoint,
+	 * and can be done as follows:
+	 * 
+	 * <pre>
+	 * {@code
+	 * ClientConnectionEvents.LOGIN.register(minecraft -> {
+	 * 	...
+	 * });
+	 * }
+	 * </pre>
+	 */
+	public static final Event<Consumer<Minecraft>> LOGIN = Event.consumer();
+	/**
+	 * This event is fired after login, once channel registration is complete.
+	 * 
+	 * <p>
+	 * This marks the moment data can safely be sent to the server.
+	 * 
+	 * <p>
+	 * Callbacks to this event should be registered in your mod's entrypoint,
+	 * and can be done as follows:
+	 * 
+	 * <pre>
+	 * {@code
+	 * ClientConnectionEvents.PLAY_READY.register(minecraft -> {
+	 * 	...
+	 * });
+	 * }
+	 * </pre>
+	 */
+	public static final Event<Consumer<Minecraft>> PLAY_READY = Event.consumer();
+	/**
+	 * This event is fired when the client disconnects from the server.
+	 * 
+	 * <p>
+	 * Callbacks to this event should be registered in your mod's entrypoint,
+	 * and can be done as follows:
+	 * 
+	 * <pre>
+	 * {@code
+	 * ClientConnectionEvents.DISCONNECT.register(minecraft -> {
+	 * 	...
+	 * });
+	 * }
+	 * </pre>
+	 */
+	public static final Event<Consumer<Minecraft>> DISCONNECT = Event.consumer();
+
+}
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java
new file mode 100644
index 00000000..196fd1f1
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/client/ClientPlayNetworking.java
@@ -0,0 +1,155 @@
+package net.ornithemc.osl.networking.api.client;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.function.Supplier;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.network.handler.ClientNetworkHandler;
+
+import net.ornithemc.osl.core.api.util.function.IOConsumer;
+import net.ornithemc.osl.networking.api.CustomPayload;
+import net.ornithemc.osl.networking.impl.client.ClientPlayNetworkingImpl;
+
+public final class ClientPlayNetworking {
+
+	/**
+	 * Register a listener to receive data from the server through the given channel.
+	 * This listener will only be called from the main thread.
+	 */
+	public static <T extends CustomPayload> void registerListener(String channel, Supplier<T> initializer, PayloadListener<T> listener) {
+		ClientPlayNetworkingImpl.registerListener(channel, initializer, listener);
+	}
+
+	/**
+	 * Register a listener to receive data from the server through the given channel.
+	 * This listener will only be called from the main thread.
+	 */
+	public static void registerListener(String channel, StreamListener listener) {
+		ClientPlayNetworkingImpl.registerListener(channel, listener);
+	}
+
+	/**
+	 * Register a listener to receive data from the server through the given channel.
+	 * This listener will only be called from the main thread.
+	 */
+	public static void registerListenerRaw(String channel, ByteArrayListener listener) {
+		ClientPlayNetworkingImpl.registerListenerRaw(channel, listener);
+	}
+
+	/**
+	 * Remove the listener registered to the given channel.
+	 */
+	public static void unregisterListener(String channel) {
+		ClientPlayNetworkingImpl.unregisterListener(channel);
+	}
+
+	/**
+	 * Check whether the connection is ready for data to be sent to the server.
+	 */
+	public static boolean isPlayReady() {
+		return ClientPlayNetworkingImpl.isPlayReady();
+	}
+
+	/**
+	 * Check whether the given channel is open for data to be sent through it.
+	 * This method will return {@code false} if the client is not connected to a
+	 * server, or if the server has no listeners for the given channel.
+	 */
+	public static boolean canSend(String channel) {
+		return ClientPlayNetworkingImpl.canSend(channel);
+	}
+
+	/**
+	 * Send a packet to the server through the given channel. The payload will
+	 * only be written if the channel is open.
+	 */
+	public static void send(String channel, CustomPayload payload) {
+		ClientPlayNetworkingImpl.send(channel, payload);
+	}
+
+	/**
+	 * Send a packet to the server through the given channel. The writer will
+	 * only be called if the channel is open.
+	 */
+	public static void send(String channel, IOConsumer<DataOutputStream> writer) {
+		ClientPlayNetworkingImpl.send(channel, writer);
+	}
+
+	/**
+	 * Send a packet to the server through the given channel.
+	 */
+	public static void send(String channel, byte[] data) {
+		ClientPlayNetworkingImpl.send(channel, data);
+	}
+
+	/**
+	 * Send a packet to the server through the given channel, without checking
+	 * whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the server.
+	 */
+	public static void doSend(String channel, CustomPayload payload) {
+		ClientPlayNetworkingImpl.doSend(channel, payload);
+	}
+
+	/**
+	 * Send a packet to the server through the given channel, without checking
+	 * whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the server.
+	 */
+	public static void doSend(String channel, IOConsumer<DataOutputStream> writer) {
+		ClientPlayNetworkingImpl.doSend(channel, writer);
+	}
+
+	/**
+	 * Send a packet to the server through the given channel, without checking
+	 * whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the server.
+	 */
+	public static void doSend(String channel, byte[] data) {
+		ClientPlayNetworkingImpl.doSend(channel, data);
+	}
+
+	public interface PayloadListener<T extends CustomPayload> {
+
+		/**
+		 * Receive incoming data from the server.
+		 *  
+		 * @return 
+		 *  Whether the data is consumed. Should only return {@code false} if the
+		 *  data is completely ignored.
+		 */
+		boolean handle(Minecraft minecraft, ClientNetworkHandler handler, T payload) throws IOException;
+
+	}
+
+	public interface StreamListener {
+
+		/**
+		 * Receive incoming data from the server.
+		 *  
+		 * @return 
+		 *  Whether the data is consumed. Should only return {@code false} if the
+		 *  data is completely ignored.
+		 */
+		boolean handle(Minecraft minecraft, ClientNetworkHandler handler, DataInputStream data) throws IOException;
+
+	}
+
+	public interface ByteArrayListener {
+
+		/**
+		 * Receive incoming data from the server.
+		 *  
+		 * @return 
+		 *  Whether the data is consumed. Should only return {@code false} if the
+		 *  data is completely ignored.
+		 */
+		boolean handle(Minecraft minecraft, ClientNetworkHandler handler, byte[] data) throws IOException;
+
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java
new file mode 100644
index 00000000..39243656
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/client/ClientPlayNetworkingImpl.java
@@ -0,0 +1,165 @@
+package net.ornithemc.osl.networking.impl.client;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.function.Supplier;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.network.handler.ClientNetworkHandler;
+import net.minecraft.network.packet.Packet;
+
+import net.ornithemc.osl.core.api.util.function.IOConsumer;
+import net.ornithemc.osl.networking.api.CustomPayload;
+import net.ornithemc.osl.networking.api.DataStreams;
+import net.ornithemc.osl.networking.api.client.ClientPlayNetworking.ByteArrayListener;
+import net.ornithemc.osl.networking.api.client.ClientPlayNetworking.PayloadListener;
+import net.ornithemc.osl.networking.api.client.ClientPlayNetworking.StreamListener;
+import net.ornithemc.osl.networking.impl.CustomPayloadPacket;
+import net.ornithemc.osl.networking.impl.interfaces.mixin.IClientNetworkHandler;
+
+public final class ClientPlayNetworkingImpl {
+
+	private static final Logger LOGGER = LogManager.getLogger("OSL|Client Play Networking");
+
+	private static Minecraft minecraft;
+
+	public static void setUp(Minecraft minecraft) {
+		if (ClientPlayNetworkingImpl.minecraft == minecraft) {
+			throw new IllegalStateException("tried to set up client networking when it was already set up!");
+		}
+
+		ClientPlayNetworkingImpl.minecraft = minecraft;
+	}
+
+	public static void destroy(Minecraft minecraft) {
+		if (ClientPlayNetworkingImpl.minecraft != minecraft) {
+			throw new IllegalStateException("tried to destroy client networking when it was not set up!");
+		}
+
+		ClientPlayNetworkingImpl.minecraft = null;
+	}
+
+	public static final Map<String, Listener> LISTENERS = new LinkedHashMap<>();
+
+	public static <T extends CustomPayload> void registerListener(String channel, Supplier<T> initializer, PayloadListener<T> listener) {
+		registerListenerImpl(channel, (minecraft, handler, data) -> {
+			T payload = initializer.get();
+			payload.read(DataStreams.input(data));
+
+			return listener.handle(minecraft, handler, payload);
+		});
+	}
+
+	public static void registerListener(String channel, StreamListener listener) {
+		registerListenerImpl(channel, (minecraft, handler, data) -> {
+			return listener.handle(minecraft, handler, DataStreams.input(data));
+		});
+	}
+
+	public static void registerListenerRaw(String channel, ByteArrayListener listener) {
+		registerListenerImpl(channel, listener::handle);
+	}
+
+	private static void registerListenerImpl(String channel, Listener listener) {
+		LISTENERS.compute(channel, (key, value) -> {
+			if (value != null) {
+				throw new IllegalStateException("there is already a listener on channel \'" + channel + "\'");
+			}
+
+			return listener;
+		});
+	}
+
+	public static void unregisterListener(String channel) {
+		LISTENERS.remove(channel);
+	}
+
+	public static boolean handle(ClientNetworkHandler handler, CustomPayloadPacket packet) {
+		Listener listener = LISTENERS.get(packet.channel);
+
+		if (listener != null) {
+			try {
+				return listener.handle(minecraft, handler, packet.data);
+			} catch (IOException e) {
+				LOGGER.warn("error handling custom payload on channel \'" + packet.channel + "\'", e);
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public static boolean isPlayReady() {
+		IClientNetworkHandler handler = (IClientNetworkHandler)minecraft.getNetworkHandler();
+		return handler != null && handler.osl$networking$isPlayReady();
+	}
+
+	public static boolean canSend(String channel) {
+		IClientNetworkHandler handler = (IClientNetworkHandler)minecraft.getNetworkHandler();
+		return handler != null && handler.osl$networking$isRegisteredServerChannel(channel);
+	}
+
+	public static void send(String channel, CustomPayload payload) {
+		if (canSend(channel)) {
+			doSend(channel, payload);
+		}
+	}
+
+	public static void send(String channel, IOConsumer<DataOutputStream> writer) {
+		if (canSend(channel)) {
+			doSend(channel, writer);
+		}
+	}
+
+	public static void send(String channel, byte[] data) {
+		if (canSend(channel)) {
+			doSend(channel, data);
+		}
+	}
+
+	public static void doSend(String channel, CustomPayload payload) {
+		sendPacket(makePacket(channel, payload));
+	}
+
+	public static void doSend(String channel, IOConsumer<DataOutputStream> writer) {
+		sendPacket(makePacket(channel, writer));
+	}
+
+	public static void doSend(String channel, byte[] data) {
+		sendPacket(makePacket(channel, data));
+	}
+
+	private static Packet makePacket(String channel, CustomPayload payload) {
+		return makePacket(channel, payload::write);
+	}
+
+	private static Packet makePacket(String channel, IOConsumer<DataOutputStream> writer) {
+		try {
+			return new CustomPayloadPacket(channel, DataStreams.output(writer).toByteArray());
+		} catch (IOException e) {
+			LOGGER.warn("error writing custom payload to channel \'" + channel + "\'", e);
+			return null;
+		}
+	}
+
+	private static Packet makePacket(String channel, byte[] data) {
+		return new CustomPayloadPacket(channel, data);
+	}
+
+	private static void sendPacket(Packet packet) {
+		if (packet != null) {
+			minecraft.getNetworkHandler().sendPacket(packet);
+		}
+	}
+
+	private interface Listener {
+
+		boolean handle(Minecraft minecraft, ClientNetworkHandler handler, byte[] data) throws IOException;
+
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java
new file mode 100644
index 00000000..a4eb8c1c
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IClientNetworkHandler.java
@@ -0,0 +1,13 @@
+package net.ornithemc.osl.networking.impl.interfaces.mixin;
+
+import java.util.Set;
+
+public interface IClientNetworkHandler {
+
+	boolean osl$networking$isPlayReady();
+
+	void osl$networking$registerServerChannels(Set<String> channels);
+
+	boolean osl$networking$isRegisteredServerChannel(String channel);
+
+}
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java
new file mode 100644
index 00000000..16afa575
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/client/ClientNetworkHandlerMixin.java
@@ -0,0 +1,65 @@
+package net.ornithemc.osl.networking.impl.mixin.client;
+
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.network.handler.ClientNetworkHandler;
+
+import net.ornithemc.osl.networking.api.client.ClientConnectionEvents;
+import net.ornithemc.osl.networking.impl.interfaces.mixin.IClientNetworkHandler;
+
+@Mixin(ClientNetworkHandler.class)
+public class ClientNetworkHandlerMixin implements IClientNetworkHandler {
+
+	@Shadow @Final private Minecraft minecraft;
+
+	/**
+	 * Channels that the server is listening to.
+	 */
+	@Unique private Set<String> serverChannels;
+
+	@Inject(
+		method = "handleLogin",
+		at = @At(
+			value = "TAIL"
+		)
+	)
+	private void osl$networking$handleLogin(CallbackInfo ci) {
+		ClientConnectionEvents.LOGIN.invoker().accept(minecraft);
+	}
+
+	@Inject(
+		method = "onDisconnect",
+		at = @At(
+			value = "HEAD"
+		)
+	)
+	private void osl$networking$handleDisconnect(CallbackInfo ci) {
+		ClientConnectionEvents.DISCONNECT.invoker().accept(minecraft);
+		serverChannels = null;
+	}
+
+	@Override
+	public boolean osl$networking$isPlayReady() {
+		return serverChannels != null;
+	}
+
+	@Override
+	public void osl$networking$registerServerChannels(Set<String> channels) {
+		serverChannels = new LinkedHashSet<>(channels);
+	}
+
+	@Override
+	public boolean osl$networking$isRegisteredServerChannel(String channel) {
+		return serverChannels != null && serverChannels.contains(channel);
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java
new file mode 100644
index 00000000..d0a1bf15
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/HandshakePacketMixin.java
@@ -0,0 +1,27 @@
+package net.ornithemc.osl.networking.impl.mixin.common;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.network.packet.HandshakePacket;
+
+import net.ornithemc.osl.networking.impl.Constants;
+
+@Mixin(HandshakePacket.class)
+public class HandshakePacketMixin {
+
+	@Shadow private String protocol;
+
+	@Inject(
+		method = "<init>(Ljava/lang/String;)V",
+		at = @At(
+			value = "TAIL"
+		)
+	)
+	private void osl$networking$modifyHandshakeForOsl(CallbackInfo ci) {
+		protocol = Constants.OSL_HANDSHAKE_KEY;
+	}
+}
diff --git a/libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
similarity index 100%
rename from libraries/networking/networking-client-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
rename to libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
diff --git a/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/resources/osl.networking.mixins.json b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/resources/osl.networking.mixins.json
new file mode 100644
index 00000000..cfeee93a
--- /dev/null
+++ b/libraries/networking/networking-client-mcb1.5-mc11w48a/src/main/resources/osl.networking.mixins.json
@@ -0,0 +1,18 @@
+{
+	"required": true,
+	"minVersion": "0.8",
+	"package": "net.ornithemc.osl.networking.impl.mixin",
+	"compatibilityLevel": "JAVA_8",
+	"mixins": [
+		"common.HandshakePacketMixin",
+		"common.PacketAccessor"
+	],
+	"client": [
+		"client.ClientNetworkHandlerMixin"
+	],
+	"server": [
+	],
+	"injectors": {
+		"defaultRequire": 1
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/build.gradle b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/build.gradle
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/build.gradle
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/build.gradle
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/gradle.properties b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/gradle.properties
new file mode 100644
index 00000000..ffbdb75b
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/gradle.properties
@@ -0,0 +1,7 @@
+environment = server
+min_mc_version = b1.0
+max_mc_version = b1.4_01
+mc_version_range = >=1.0.0-beta.0 <=1.0.0-beta.4.1
+
+feather_build = 12
+nests_build = 1
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
new file mode 100644
index 00000000..237d7e67
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
@@ -0,0 +1,13 @@
+package net.ornithemc.osl.networking.api;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public interface CustomPayload {
+
+	void read(DataInputStream input) throws IOException;
+
+	void write(DataOutputStream output) throws IOException;
+
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
new file mode 100644
index 00000000..f68e894c
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
@@ -0,0 +1,23 @@
+package net.ornithemc.osl.networking.api;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+import net.ornithemc.osl.core.api.util.function.IOConsumer;
+
+public final class DataStreams {
+
+	public static DataInputStream input(byte[] bytes) {
+		return new DataInputStream(new ByteArrayInputStream(bytes == null ? new byte[0] : bytes));
+	}
+
+	public static ByteArrayOutputStream output(IOConsumer<DataOutputStream> writer) throws IOException {
+		ByteArrayOutputStream bos = new ByteArrayOutputStream();
+		DataOutputStream os = new DataOutputStream(bos);
+		writer.accept(os);
+		return bos;
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
new file mode 100644
index 00000000..619c1125
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
@@ -0,0 +1,73 @@
+package net.ornithemc.osl.networking.impl;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+import net.minecraft.network.PacketHandler;
+import net.minecraft.network.packet.Packet;
+import net.minecraft.server.network.handler.ServerPlayNetworkHandler;
+
+import net.ornithemc.osl.networking.impl.server.ServerPlayNetworkingImpl;
+
+public class CustomPayloadPacket extends Packet {
+
+	public String channel;
+	public int size;
+	public byte[] data;
+
+	public CustomPayloadPacket() {
+	}
+
+	public CustomPayloadPacket(String channel, byte[] data) {
+		this.channel = channel;
+		this.data = data;
+		if (data != null) {
+			this.size = data.length;
+			if (this.size > Short.MAX_VALUE) {
+				throw new IllegalArgumentException("Payload may not be larger than 32k");
+			}
+		}
+	}
+
+	// the IOException has been stripped from the read/write methods
+	// by the obfuscator, thus we catch it and re-throw it as a
+	// runtime exception - it will be caught in Connection#read anyhow
+
+	@Override
+	public void read(DataInputStream input) {
+		try {
+			this.channel = input.readUTF();
+			this.size = input.readShort();
+			if (this.size > 0 && this.size < Short.MAX_VALUE) {
+				this.data = new byte[this.size];
+				input.readFully(this.data);
+			}
+		} catch (IOException e) {
+			throw new IllegalStateException(e);
+		}
+	}
+
+	@Override
+	public void write(DataOutputStream output) {
+		try {
+			output.writeUTF(this.channel);
+			output.writeShort(this.size);
+			if (this.data != null) {
+				output.write(this.data);
+			}
+		} catch (IOException e) {
+			throw new IllegalStateException(e);
+		}
+	}
+
+	@Override
+	public void handle(PacketHandler handler) {
+		ServerPlayNetworkingImpl.handle((ServerPlayNetworkHandler)handler, this);
+	}
+
+	@Override
+	public int getSize() {
+		return 2 + this.channel.length() * 2 + 2 + this.size;
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
new file mode 100644
index 00000000..faf5792b
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
@@ -0,0 +1,55 @@
+package net.ornithemc.osl.networking.impl;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import net.minecraft.network.packet.Packet;
+
+import net.ornithemc.osl.networking.api.CustomPayload;
+import net.ornithemc.osl.networking.impl.server.ServerPlayNetworkingImpl;
+
+public class HandshakePayload implements CustomPayload {
+
+	public static final String CHANNEL = "OSL|Handshake";
+
+	public Set<String> channels;
+
+	public HandshakePayload() {
+	}
+
+	public HandshakePayload(Set<String> channels) {
+		this.channels = channels;
+	}
+
+	public static HandshakePayload client() {
+		throw new UnsupportedOperationException();
+	}
+
+	public static HandshakePayload server() {
+		return new HandshakePayload(ServerPlayNetworkingImpl.LISTENERS.keySet());
+	}
+
+	@Override
+	public void read(DataInputStream input) throws IOException {
+		channels = new LinkedHashSet<>();
+		int channelCount = input.readInt();
+
+		if (channelCount > 0) {
+			for (int i = 0; i < channelCount; i++) {
+				channels.add(input.readUTF());
+			}
+		}
+	}
+
+	@Override
+	public void write(DataOutputStream output) throws IOException {
+		output.writeInt(channels.size());
+
+		for (String channel : channels) {
+			output.writeUTF(channel);
+		}
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/Networking.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
new file mode 100644
index 00000000..dffc3265
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
@@ -0,0 +1,30 @@
+package net.ornithemc.osl.networking.impl;
+
+import net.ornithemc.osl.entrypoints.api.ModInitializer;
+import net.ornithemc.osl.lifecycle.api.MinecraftEvents;
+import net.ornithemc.osl.networking.api.server.ServerConnectionEvents;
+import net.ornithemc.osl.networking.api.server.ServerPlayNetworking;
+import net.ornithemc.osl.networking.impl.interfaces.mixin.IServerPlayNetworkHandler;
+import net.ornithemc.osl.networking.impl.mixin.common.PacketAccessor;
+import net.ornithemc.osl.networking.impl.server.ServerPlayNetworkingImpl;
+
+public class Networking implements ModInitializer {
+
+	@Override
+	public void init() {
+		PacketAccessor.register(Constants.CUSTOM_PAYLOAD_PACKET_ID, CustomPayloadPacket.class);
+
+		MinecraftEvents.START.register(server -> {
+			ServerPlayNetworkingImpl.setUp(server);
+		});
+		MinecraftEvents.STOP.register(server -> {
+			ServerPlayNetworkingImpl.destroy(server);
+		});
+		ServerPlayNetworking.registerListener(HandshakePayload.CHANNEL, HandshakePayload::new, (server, handler, player, payload) -> {
+			((IServerPlayNetworkHandler)handler).osl$networking$registerClientChannels(payload.channels);
+			ServerConnectionEvents.PLAY_READY.invoker().accept(server, player);
+
+			return true;
+		});
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java
diff --git a/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
new file mode 100644
index 00000000..ccc94437
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
@@ -0,0 +1,15 @@
+package net.ornithemc.osl.networking.impl.mixin.common;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Invoker;
+
+import net.minecraft.network.packet.Packet;
+
+@Mixin(Packet.class)
+public interface PacketAccessor {
+
+	@Invoker("register")
+	public static void register(int id, Class<? extends Packet> type) {
+		throw new AssertionError();
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/resources/osl.networking.mixins.json b/libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/resources/osl.networking.mixins.json
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/resources/osl.networking.mixins.json
rename to libraries/networking/networking-server-mcb1.0-mcb1.4_01/src/main/resources/osl.networking.mixins.json
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/build.gradle b/libraries/networking/networking-server-mcb1.5-mc11w48a/build.gradle
new file mode 100644
index 00000000..06957d1a
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/build.gradle
@@ -0,0 +1,4 @@
+setUpModule(project,
+	'entrypoints-server-mcserver-a0.1.0-mc12w30e',
+	'lifecycle-events-server-mcb1.4-1507-mc11w50a'
+)
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/gradle.properties b/libraries/networking/networking-server-mcb1.5-mc11w48a/gradle.properties
similarity index 51%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/gradle.properties
rename to libraries/networking/networking-server-mcb1.5-mc11w48a/gradle.properties
index a845d9a4..20fe3b40 100644
--- a/libraries/networking/networking-server-mcb1.0-mc11w48a/gradle.properties
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/gradle.properties
@@ -1,7 +1,7 @@
 environment = server
-min_mc_version = b1.0
+min_mc_version = b1.5
 max_mc_version = 11w48a
-mc_version_range = >=1.0.0-beta.0 <=1.1-alpha.11.48.a
+mc_version_range = >=1.0.0-beta.5 <=1.1-alpha.11.48.a
 
 feather_build = 12
 nests_build = 1
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
new file mode 100644
index 00000000..237d7e67
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/CustomPayload.java
@@ -0,0 +1,13 @@
+package net.ornithemc.osl.networking.api;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+public interface CustomPayload {
+
+	void read(DataInputStream input) throws IOException;
+
+	void write(DataOutputStream output) throws IOException;
+
+}
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
new file mode 100644
index 00000000..f68e894c
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/DataStreams.java
@@ -0,0 +1,23 @@
+package net.ornithemc.osl.networking.api;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+import net.ornithemc.osl.core.api.util.function.IOConsumer;
+
+public final class DataStreams {
+
+	public static DataInputStream input(byte[] bytes) {
+		return new DataInputStream(new ByteArrayInputStream(bytes == null ? new byte[0] : bytes));
+	}
+
+	public static ByteArrayOutputStream output(IOConsumer<DataOutputStream> writer) throws IOException {
+		ByteArrayOutputStream bos = new ByteArrayOutputStream();
+		DataOutputStream os = new DataOutputStream(bos);
+		writer.accept(os);
+		return bos;
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java
new file mode 100644
index 00000000..a6e60c20
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerConnectionEvents.java
@@ -0,0 +1,71 @@
+package net.ornithemc.osl.networking.api.server;
+
+import java.util.function.BiConsumer;
+
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.living.player.ServerPlayerEntity;
+
+import net.ornithemc.osl.core.api.events.Event;
+
+/**
+ * Events related to the server side of a client-server connection.
+ */
+public class ServerConnectionEvents {
+
+	/**
+	 * This event is fired after a successful login occurs.
+	 * 
+	 * <p>
+	 * Note that channel registration happens after login,
+	 * and until then data cannot safely be sent to the client.
+	 * 
+	 * <p>
+	 * Callbacks to this event should be registered in your mod's entrypoint,
+	 * and can be done as follows:
+	 * 
+	 * <pre>
+	 * {@code
+	 * ServerConnectionEvents.LOGIN.register((server, player) -> {
+	 * 	...
+	 * });
+	 * }
+	 * </pre>
+	 */
+	public static final Event<BiConsumer<MinecraftServer, ServerPlayerEntity>> LOGIN = Event.biConsumer();
+	/**
+	 * This event is fired after login, once channel registration is complete.
+	 * 
+	 * <p>
+	 * This marks the moment data can safely be sent to the client.
+	 * 
+	 * <p>
+	 * Callbacks to this event should be registered in your mod's entrypoint,
+	 * and can be done as follows:
+	 * 
+	 * <pre>
+	 * {@code
+	 * ServerConnectionEvents.PLAY_READY.register((server, player) -> {
+	 * 	...
+	 * });
+	 * }
+	 * </pre>
+	 */
+	public static final Event<BiConsumer<MinecraftServer, ServerPlayerEntity>> PLAY_READY = Event.biConsumer();
+	/**
+	 * This event is fired when a client disconnects from the server.
+	 * 
+	 * <p>
+	 * Callbacks to this event should be registered in your mod's entrypoint,
+	 * and can be done as follows:
+	 * 
+	 * <pre>
+	 * {@code
+	 * ServerConnectionEvents.DISCONNECT.register((server, player) -> {
+	 * 	...
+	 * });
+	 * }
+	 * </pre>
+	 */
+	public static final Event<BiConsumer<MinecraftServer, ServerPlayerEntity>> DISCONNECT = Event.biConsumer();
+
+}
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java
new file mode 100644
index 00000000..1987a584
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/api/server/ServerPlayNetworking.java
@@ -0,0 +1,318 @@
+package net.ornithemc.osl.networking.api.server;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.function.Supplier;
+
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.living.player.ServerPlayerEntity;
+import net.minecraft.server.network.handler.ServerPlayNetworkHandler;
+
+import net.ornithemc.osl.core.api.util.function.IOConsumer;
+import net.ornithemc.osl.networking.api.CustomPayload;
+import net.ornithemc.osl.networking.impl.server.ServerPlayNetworkingImpl;
+
+public final class ServerPlayNetworking {
+
+	/**
+	 * Register a listener to receive data from the server through the given channel.
+	 * This listener will only be called from the main thread.
+	 */
+	public static <T extends CustomPayload> void registerListener(String channel, Supplier<T> initializer, PayloadListener<T> listener) {
+		ServerPlayNetworkingImpl.registerListener(channel, initializer, listener);
+	}
+
+	/**
+	 * Register a listener to receive data from the server through the given channel.
+	 * This listener will only be called from the main thread.
+	 */
+	public static void registerListener(String channel, StreamListener listener) {
+		ServerPlayNetworkingImpl.registerListener(channel, listener);
+	}
+
+	/**
+	 * Register a listener to receive data from the server through the given channel.
+	 * This listener will only be called from the main thread.
+	 */
+	public static void registerListenerRaw(String channel, ByteArrayListener listener) {
+		ServerPlayNetworkingImpl.registerListenerRaw(channel, listener);
+	}
+
+	/**
+	 * Remove the listener registered to the given channel.
+	 */
+	public static void unregisterListener(String channel) {
+		ServerPlayNetworkingImpl.unregisterListener(channel);
+	}
+
+	/**
+	 * Check whether the connection is ready for data to be sent to the client.
+	 */
+	public static boolean isPlayReady(ServerPlayerEntity player) {
+		return ServerPlayNetworkingImpl.isPlayReady(player);
+	}
+
+	/**
+	 * Check whether the given channel is open for data to be sent through it.
+	 * This method will return {@code false} if the client has no listeners for
+	 * the given channel.
+	 */
+	public static boolean canSend(ServerPlayerEntity player, String channel) {
+		return ServerPlayNetworkingImpl.canSend(player, channel);
+	}
+
+	/**
+	 * Send a packet to the given player through the given channel. The payload
+	 * will only be written if the channel is open.
+	 */
+	public static void send(ServerPlayerEntity player, String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.send(player, channel, payload);
+	}
+
+	/**
+	 * Send a packet to the given player through the given channel. The writer
+	 * will only be called if the channel is open.
+	 */
+	public static void send(ServerPlayerEntity player, String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.send(player, channel, writer);
+	}
+
+	/**
+	 * Send a packet to the given player through the given channel.
+	 */
+	public static void send(ServerPlayerEntity player, String channel, byte[] data) {
+		ServerPlayNetworkingImpl.send(player, channel, data);
+	}
+
+	/**
+	 * Send a packet to the given players through the given channel. The payload
+	 * will only be written if the channel is open for at least one player.
+	 */
+	public static void send(Iterable<ServerPlayerEntity> players, String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.send(players, channel, payload);
+	}
+
+	/**
+	 * Send a packet to the given players through the given channel. The writer
+	 * will only be called if the channel is open for at least one player.
+	 */
+	public static void send(Iterable<ServerPlayerEntity> players, String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.send(players, channel, writer);
+	}
+
+	/**
+	 * Send a packet to the given players through the given channel.
+	 */
+	public static void send(Iterable<ServerPlayerEntity> players, String channel, byte[] data) {
+		ServerPlayNetworkingImpl.send(players, channel, data);
+	}
+
+	/**
+	 * Send a packet to the players in the given dimension through the given
+	 * channel. The payload will only be written if the channel is open for at
+	 * least one player.
+	 */
+	public static void send(int dimension, String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.send(dimension, channel, payload);
+	}
+
+	/**
+	 * Send a packet to the players in the given dimension through the given
+	 * channel. The writer will only be called if the channel is open for at
+	 * least one player.
+	 */
+	public static void send(int dimension, String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.send(dimension, channel, writer);
+	}
+
+	/**
+	 * Send a packet to the players in the given dimension through the given
+	 * channel.
+	 */
+	public static void send(int dimension, String channel, byte[] data) {
+		ServerPlayNetworkingImpl.send(dimension, channel, data);
+	}
+
+	/**
+	 * Send a packet to all players through the given channel. The payload will
+	 * only be written if the channel is open for at least one player.
+	 */
+	public static void send(String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.send(channel, payload);
+	}
+
+	/**
+	 * Send a packet to all players through the given channel. The writer will
+	 * only be called if the channel is open for at least one player.
+	 */
+	public static void send(String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.send(channel, writer);
+	}
+
+	/**
+	 * Send a packet to all players through the given channel.
+	 */
+	public static void send(String channel, byte[] data) {
+		ServerPlayNetworkingImpl.send(channel, data);
+	}
+
+	/**
+	 * Send a packet to the given player through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(ServerPlayerEntity player, String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.doSend(player, channel, payload);
+	}
+
+	/**
+	 * Send a packet to the given player through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(ServerPlayerEntity player, String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.doSend(player, channel, writer);
+	}
+
+	/**
+	 * Send a packet to the given player through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(ServerPlayerEntity player, String channel, byte[] data) {
+		ServerPlayNetworkingImpl.doSend(player, channel, data);
+	}
+
+	/**
+	 * Send a packet to the given players through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(Iterable<ServerPlayerEntity> players, String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.doSend(players, channel, payload);
+	}
+
+	/**
+	 * Send a packet to the given players through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(Iterable<ServerPlayerEntity> players, String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.doSend(players, channel, writer);
+	}
+
+	/**
+	 * Send a packet to the given players through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(Iterable<ServerPlayerEntity> players, String channel, byte[] data) {
+		ServerPlayNetworkingImpl.doSend(players, channel, data);
+	}
+
+	/**
+	 * Send a packet to the players in the given dimension through the given
+	 * channel, without checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(int dimension, String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.doSend(dimension, channel, payload);
+	}
+
+	/**
+	 * Send a packet to the players in the given dimension through the given
+	 * channel, without checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(int dimension, String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.doSend(dimension, channel, writer);
+	}
+
+	/**
+	 * Send a packet to the players in the given dimension through the given
+	 * channel, without checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(int dimension, String channel, byte[] data) {
+		ServerPlayNetworkingImpl.doSend(dimension, channel, data);
+	}
+
+	/**
+	 * Send a packet to all players through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(String channel, CustomPayload payload) {
+		ServerPlayNetworkingImpl.doSend(channel, payload);
+	}
+
+	/**
+	 * Send a packet to all players through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(String channel, IOConsumer<DataOutputStream> writer) {
+		ServerPlayNetworkingImpl.doSend(channel, writer);
+	}
+
+	/**
+	 * Send a packet to all players through the given channel, without
+	 * checking whether it is open.
+	 * USE WITH CAUTION. Careless use of this method could lead to packet and log
+	 * spam on the client.
+	 */
+	public static void doSend(String channel, byte[] data) {
+		ServerPlayNetworkingImpl.doSend(channel, data);
+	}
+
+	public interface PayloadListener<T extends CustomPayload> {
+
+		/**
+		 * Receive incoming data from the client.
+		 *  
+		 * @return 
+		 *  Whether the data is consumed. Should only return {@code false} if the
+		 *  data is completely ignored.
+		 */
+		boolean handle(MinecraftServer server, ServerPlayNetworkHandler handler, ServerPlayerEntity player, T payload) throws IOException;
+
+	}
+
+	public interface StreamListener {
+
+		/**
+		 * Receive incoming data from the client.
+		 *  
+		 * @return 
+		 *  Whether the data is consumed. Should only return {@code false} if the
+		 *  data is completely ignored.
+		 */
+		boolean handle(MinecraftServer server, ServerPlayNetworkHandler handler, ServerPlayerEntity player, DataInputStream data) throws IOException;
+
+	}
+
+	public interface ByteArrayListener {
+
+		/**
+		 * Receive incoming data from the client.
+		 *  
+		 * @return 
+		 *  Whether the data is consumed. Should only return {@code false} if the
+		 *  data is completely ignored.
+		 */
+		boolean handle(MinecraftServer server, ServerPlayNetworkHandler handler, ServerPlayerEntity player, byte[] data) throws IOException;
+
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
rename to libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/CustomPayloadPacket.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
rename to libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/HandshakePayload.java
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
rename to libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/Networking.java
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java
new file mode 100644
index 00000000..1a97a535
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/interfaces/mixin/IServerPlayNetworkHandler.java
@@ -0,0 +1,17 @@
+package net.ornithemc.osl.networking.impl.interfaces.mixin;
+
+import java.util.Set;
+
+import net.minecraft.server.entity.living.player.ServerPlayerEntity;
+
+public interface IServerPlayNetworkHandler {
+
+	ServerPlayerEntity osl$networking$getPlayer();
+
+	boolean osl$networking$isPlayReady();
+
+	void osl$networking$registerClientChannels(Set<String> channels);
+
+	boolean osl$networking$isRegisteredClientChannel(String channel);
+
+}
diff --git a/libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
similarity index 100%
rename from libraries/networking/networking-server-mcb1.0-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
rename to libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/PacketAccessor.java
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java
new file mode 100644
index 00000000..49834b26
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerLoginNetworkHandlerMixin.java
@@ -0,0 +1,62 @@
+package net.ornithemc.osl.networking.impl.mixin.common;
+
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
+
+import net.minecraft.network.packet.HelloPacket;
+import net.minecraft.network.packet.LoginPacket;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.living.player.ServerPlayerEntity;
+import net.minecraft.server.network.handler.ServerLoginNetworkHandler;
+
+import net.ornithemc.osl.networking.api.server.ServerConnectionEvents;
+import net.ornithemc.osl.networking.impl.Constants;
+import net.ornithemc.osl.networking.impl.HandshakePayload;
+import net.ornithemc.osl.networking.impl.server.ServerPlayNetworkingImpl;
+
+@Mixin(ServerLoginNetworkHandler.class)
+public class ServerLoginNetworkHandlerMixin {
+
+	@Shadow @Final private MinecraftServer server;
+
+	/**
+	 * is the client also running OSL?
+	 */
+	@Unique private boolean ornithe;
+
+	@Inject(
+		method = "handleHello",
+		at = @At(
+			value = "HEAD"
+		)
+	)
+	private void osl$networking$handleHandshake(HelloPacket packet, CallbackInfo ci) {
+		if (Constants.OSL_HANDSHAKE_KEY.equals(packet.serverId)) {
+			ornithe = true;
+		}
+	}
+
+	@Inject(
+		method = "acceptLogin",
+		locals = LocalCapture.CAPTURE_FAILHARD,
+		at = @At(
+			value = "TAIL"
+		)
+	)
+	private void osl$networking$handleLogin(LoginPacket packet, CallbackInfo ci, ServerPlayerEntity player) {
+		if (player != null) {
+			if (ornithe) {
+				// send channel registration data as soon as login occurs
+				ServerPlayNetworkingImpl.doSend(player, HandshakePayload.CHANNEL, HandshakePayload.server());
+			}
+
+			ServerConnectionEvents.LOGIN.invoker().accept(server, player);
+		}
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java
new file mode 100644
index 00000000..591c6517
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/mixin/common/ServerPlayNetworkHandlerMixin.java
@@ -0,0 +1,62 @@
+package net.ornithemc.osl.networking.impl.mixin.common;
+
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.living.player.ServerPlayerEntity;
+import net.minecraft.server.network.handler.ServerPlayNetworkHandler;
+
+import net.ornithemc.osl.networking.api.server.ServerConnectionEvents;
+import net.ornithemc.osl.networking.impl.interfaces.mixin.IServerPlayNetworkHandler;
+
+@Mixin(ServerPlayNetworkHandler.class)
+public class ServerPlayNetworkHandlerMixin implements IServerPlayNetworkHandler {
+
+	@Shadow @Final private MinecraftServer server;
+	@Shadow @Final private ServerPlayerEntity player;
+
+	/**
+	 * Channels that the client is listening to.
+	 */
+	@Unique private Set<String> clientChannels;
+
+	@Inject(
+		method = "onDisconnect",
+		at = @At(
+			value = "HEAD"
+		)
+	)
+	private void osl$networking$handleDisconnect(CallbackInfo ci) {
+		ServerConnectionEvents.DISCONNECT.invoker().accept(server, player);
+		clientChannels = null;
+	}
+
+	@Override
+	public ServerPlayerEntity osl$networking$getPlayer() {
+		return player;
+	}
+
+	@Override
+	public boolean osl$networking$isPlayReady() {
+		return clientChannels != null;
+	}
+
+	@Override
+	public void osl$networking$registerClientChannels(Set<String> channels) {
+		clientChannels = new LinkedHashSet<>(channels);
+	}
+
+	@Override
+	public boolean osl$networking$isRegisteredClientChannel(String channel) {
+		return clientChannels != null && clientChannels.contains(channel);
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java
new file mode 100644
index 00000000..0fdf6c60
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/java/net/ornithemc/osl/networking/impl/server/ServerPlayNetworkingImpl.java
@@ -0,0 +1,268 @@
+package net.ornithemc.osl.networking.impl.server;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Predicate;
+import java.util.function.Supplier;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import net.minecraft.network.packet.Packet;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.living.player.ServerPlayerEntity;
+import net.minecraft.server.network.handler.ServerPlayNetworkHandler;
+
+import net.ornithemc.osl.core.api.util.function.IOConsumer;
+import net.ornithemc.osl.networking.api.CustomPayload;
+import net.ornithemc.osl.networking.api.DataStreams;
+import net.ornithemc.osl.networking.api.server.ServerPlayNetworking.ByteArrayListener;
+import net.ornithemc.osl.networking.api.server.ServerPlayNetworking.PayloadListener;
+import net.ornithemc.osl.networking.api.server.ServerPlayNetworking.StreamListener;
+import net.ornithemc.osl.networking.impl.CustomPayloadPacket;
+import net.ornithemc.osl.networking.impl.interfaces.mixin.IServerPlayNetworkHandler;
+
+public final class ServerPlayNetworkingImpl {
+
+	private static final Logger LOGGER = LogManager.getLogger("OSL|Server Play Networking");
+
+	private static MinecraftServer server;
+
+	public static void setUp(MinecraftServer server) {
+		if (ServerPlayNetworkingImpl.server == server) {
+			throw new IllegalStateException("tried to set up server networking when it was already set up!");
+		}
+
+		ServerPlayNetworkingImpl.server = server;
+	}
+
+	public static void destroy(MinecraftServer server) {
+		if (ServerPlayNetworkingImpl.server != server) {
+			throw new IllegalStateException("tried to destroy server networking when it was not set up!");
+		}
+
+		ServerPlayNetworkingImpl.server = null;
+	}
+
+	public static final Map<String, Listener> LISTENERS = new LinkedHashMap<>();
+
+	public static <T extends CustomPayload> void registerListener(String channel, Supplier<T> initializer, PayloadListener<T> listener) {
+		registerListenerImpl(channel, (server, handler, player, data) -> {
+			T payload = initializer.get();
+			payload.read(DataStreams.input(data));
+
+			return listener.handle(server, handler, player, payload);
+		});
+	}
+
+	public static void registerListener(String channel, StreamListener listener) {
+		registerListenerImpl(channel, (server, handler, player, data) -> {
+			return listener.handle(server, handler, player, DataStreams.input(data));
+		});
+	}
+
+	public static void registerListenerRaw(String channel, ByteArrayListener listener) {
+		registerListenerImpl(channel, listener::handle);
+	}
+
+	private static void registerListenerImpl(String channel, Listener listener) {
+		LISTENERS.compute(channel, (key, value) -> {
+			if (value != null) {
+				throw new IllegalStateException("there is already a listener on channel \'" + channel + "\'");
+			}
+
+			return listener;
+		});
+	}
+
+	public static void unregisterListener(String channel) {
+		LISTENERS.remove(channel);
+	}
+
+	public static boolean handle(ServerPlayNetworkHandler handler, CustomPayloadPacket packet) {
+		Listener listener = LISTENERS.get(packet.channel);
+
+		if (listener != null) {
+			ServerPlayerEntity player = ((IServerPlayNetworkHandler)handler).osl$networking$getPlayer();
+
+			try {
+				return listener.handle(server, handler, player, packet.data);
+			} catch (IOException e) {
+				LOGGER.warn("error handling custom payload on channel \'" + packet.channel + "\'", e);
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public static boolean isPlayReady(ServerPlayerEntity player) {
+		IServerPlayNetworkHandler handler = (IServerPlayNetworkHandler)player.networkHandler;
+		return handler != null && handler.osl$networking$isPlayReady();
+	}
+
+	public static boolean canSend(ServerPlayerEntity player, String channel) {
+		IServerPlayNetworkHandler handler = (IServerPlayNetworkHandler)player.networkHandler;
+		return handler != null && handler.osl$networking$isRegisteredClientChannel(channel);
+	}
+
+	public static void send(ServerPlayerEntity player, String channel, CustomPayload payload) {
+		if (canSend(player, channel)) {
+			doSend(player, channel, payload);
+		}
+	}
+
+	public static void send(ServerPlayerEntity player, String channel, IOConsumer<DataOutputStream> writer) {
+		if (canSend(player, channel)) {
+			doSend(player, channel, writer);
+		}
+	}
+
+	public static void send(ServerPlayerEntity player, String channel, byte[] data) {
+		if (canSend(player, channel)) {
+			doSend(player, channel, data);
+		}
+	}
+
+	public static void send(Iterable<ServerPlayerEntity> players, String channel, CustomPayload payload) {
+		sendPacket(collectPlayers(players, p -> canSend(p, channel)), makePacket(channel, payload));
+	}
+
+	public static void send(Iterable<ServerPlayerEntity> players, String channel, IOConsumer<DataOutputStream> writer) {
+		sendPacket(collectPlayers(players, p -> canSend(p, channel)), makePacket(channel, writer));
+	}
+
+	public static void send(Iterable<ServerPlayerEntity> players, String channel, byte[] data) {
+		sendPacket(collectPlayers(players, p -> canSend(p, channel)), makePacket(channel, data));
+	}
+
+	public static void send(int dimension, String channel, CustomPayload payload) {
+		doSend(collectPlayers(p -> p.dimensionId == dimension && canSend(p, channel)), channel, payload);
+	}
+
+	public static void send(int dimension, String channel, IOConsumer<DataOutputStream> writer) {
+		doSend(collectPlayers(p -> p.dimensionId == dimension && canSend(p, channel)), channel, writer);
+	}
+
+	public static void send(int dimension, String channel, byte[] data) {
+		doSend(collectPlayers(p -> p.dimensionId == dimension && canSend(p, channel)),channel, data);
+	}
+
+	public static void send(String channel, CustomPayload payload) {
+		doSend(collectPlayers(p -> canSend(p, channel)), channel, payload);
+	}
+
+	public static void send(String channel, IOConsumer<DataOutputStream> writer) {
+		doSend(collectPlayers(p -> canSend(p, channel)), channel, writer);
+	}
+
+	public static void send(String channel, byte[] data) {
+		doSend(collectPlayers(p -> canSend(p, channel)), channel, data);
+	}
+
+	public static void doSend(ServerPlayerEntity player, String channel, CustomPayload payload) {
+		sendPacket(player, makePacket(channel, payload));
+	}
+
+	public static void doSend(ServerPlayerEntity player, String channel, IOConsumer<DataOutputStream> writer) {
+		sendPacket(player, makePacket(channel, writer));
+	}
+
+	public static void doSend(ServerPlayerEntity player, String channel, byte[] data) {
+		sendPacket(player, makePacket(channel, data));
+	}
+
+	public static void doSend(Iterable<ServerPlayerEntity> players, String channel, CustomPayload payload) {
+		sendPacket(players, makePacket(channel, payload));
+	}
+
+	public static void doSend(Iterable<ServerPlayerEntity> players, String channel, IOConsumer<DataOutputStream> writer) {
+		sendPacket(players, makePacket(channel, writer));
+	}
+
+	public static void doSend(Iterable<ServerPlayerEntity> players, String channel, byte[] data) {
+		sendPacket(players, makePacket(channel, data));
+	}
+
+	public static void doSend(int dimension, String channel, CustomPayload payload) {
+		doSend(collectPlayers(p -> p.dimensionId == dimension), channel, payload);
+	}
+
+	public static void doSend(int dimension, String channel, IOConsumer<DataOutputStream> writer) {
+		doSend(collectPlayers(p -> p.dimensionId == dimension), channel, writer);
+	}
+
+	public static void doSend(int dimension, String channel, byte[] data) {
+		doSend(collectPlayers(p -> p.dimensionId == dimension),channel, data);
+	}
+
+	public static void doSend(String channel, CustomPayload payload) {
+		doSend(collectPlayers(p -> true), channel, payload);
+	}
+
+	public static void doSend(String channel, IOConsumer<DataOutputStream> writer) {
+		doSend(collectPlayers(p -> true), channel, writer);
+	}
+
+	public static void doSend(String channel, byte[] data) {
+		doSend(collectPlayers(p -> true), channel, data);
+	}
+
+	@SuppressWarnings("unchecked") // thanks proguard
+	private static Iterable<ServerPlayerEntity> collectPlayers(Predicate<ServerPlayerEntity> filter) {
+		return collectPlayers(server.playerManager.players, filter);
+	}
+
+	private static Iterable<ServerPlayerEntity> collectPlayers(Iterable<ServerPlayerEntity> src, Predicate<ServerPlayerEntity> filter) {
+		List<ServerPlayerEntity> players = new ArrayList<>();
+
+		for (ServerPlayerEntity player : src) {
+			if (filter.test(player)) {
+				players.add(player);
+			}
+		}
+
+		return players;
+	}
+
+	private static Packet makePacket(String channel, CustomPayload payload) {
+		return makePacket(channel, payload::write);
+	}
+
+	private static Packet makePacket(String channel, IOConsumer<DataOutputStream> writer) {
+		try {
+			return new CustomPayloadPacket(channel, DataStreams.output(writer).toByteArray());
+		} catch (IOException e) {
+			LOGGER.warn("error writing custom payload to channel \'" + channel + "\'", e);
+			return null;
+		}
+	}
+
+	private static Packet makePacket(String channel, byte[] data) {
+		return new CustomPayloadPacket(channel, data);
+	}
+
+	private static void sendPacket(ServerPlayerEntity player, Packet packet) {
+		if (packet != null) {
+			player.networkHandler.sendPacket(packet);
+		}
+	}
+
+	private static void sendPacket(Iterable<ServerPlayerEntity> players, Packet packet) {
+		if (packet != null) {
+			for (ServerPlayerEntity player : players) {
+				sendPacket(player, packet);
+			}
+		}
+	}
+
+	private interface Listener {
+
+		boolean handle(MinecraftServer server, ServerPlayNetworkHandler handler, ServerPlayerEntity player, byte[] data) throws IOException;
+
+	}
+}
diff --git a/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/resources/osl.networking.mixins.json b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/resources/osl.networking.mixins.json
new file mode 100644
index 00000000..56dbde5c
--- /dev/null
+++ b/libraries/networking/networking-server-mcb1.5-mc11w48a/src/main/resources/osl.networking.mixins.json
@@ -0,0 +1,18 @@
+{
+	"required": true,
+	"minVersion": "0.8",
+	"package": "net.ornithemc.osl.networking.impl.mixin",
+	"compatibilityLevel": "JAVA_8",
+	"mixins": [
+		"common.PacketAccessor",
+		"common.ServerLoginNetworkHandlerMixin",
+		"common.ServerPlayNetworkHandlerMixin"
+	],
+	"client": [
+	],
+	"server": [
+	],
+	"injectors": {
+		"defaultRequire": 1
+	}
+}
diff --git a/settings.gradle b/settings.gradle
index a29cc1a0..5d1dbb80 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -76,12 +76,14 @@ include ':libraries:lifecycle-events:lifecycle-events-mc18w30a-mc18w50a'
 include ':libraries:lifecycle-events:lifecycle-events-mc19w04a-mc1.14.4'
 
 include ':libraries:networking'
-include ':libraries:networking:networking-client-mcb1.0-mc11w48a'
+include ':libraries:networking:networking-client-mcb1.0-mcb1.4_01'
+include ':libraries:networking:networking-client-mcb1.5-mc11w48a'
 include ':libraries:networking:networking-client-mc11w49a-mc12w17a'
 include ':libraries:networking:networking-client-mc12w18a-mc12w19a'
 include ':libraries:networking:networking-client-mc12w21a-mc12w27a'
 include ':libraries:networking:networking-client-mc12w30a-mc12w30e'
-include ':libraries:networking:networking-server-mcb1.0-mc11w48a'
+include ':libraries:networking:networking-server-mcb1.0-mcb1.4_01'
+include ':libraries:networking:networking-server-mcb1.5-mc11w48a'
 include ':libraries:networking:networking-server-mc11w49a-mc12w16a'
 include ':libraries:networking:networking-server-mc12w17a-mc12w17a'
 include ':libraries:networking:networking-server-mc12w18a-mc12w19a'